Osmond and %oberls-^Anslcn. 
Phil. Trans. 1896. A. Plate 9. 
'Phototypie Berthaud, 'Paris. 
Note. —The sections, 1 to 22, are all from bars which were cast, in heated moulds, and fractured by longitudinal stress. Tn all cases, except Nos. 16, 18. they were etched with aqua regia. 
In some cases (Nos. 7, 8, 19-22) the sections were also annealed by heating them to a temperature between 200° and 250 C. 
No. 1. Gold alloyed with 0'2 °/ Q of 
Zirconium. X 17 diam. Illu¬ 
minated obliquely. 
No. 2. Gold alloyed with 0‘2 °/ Q of 
Lithium, x 17 diam. Illuminated 
obliquely. 
No. 3. Gold alloyed with 0’2 °/ c of 
Indium, x 17 diam. Illumi¬ 
nated obliquely. 
No. 4. Gold alloyed with 0‘2 °/ 0 of 
Aluminium. X 17 diam. Illumi¬ 
nated obliquely. 
No. 5. Gold alloyed with 0*2 % 
Potassium. x 17 diam. Illumi¬ 
nated obliquely. 
No. 6. Same as No. 1, but illumi¬ 
nated from the opposite direc¬ 
tion. 
No. 7. Gold alloyed with 02 °/ o of Bis¬ 
muth. Annealed. x 17 cliam. 
Illuminated obliquely. 
No. 8. Gold alloyed with 0‘2 °/ 0 of 
Antimony. Annealed. X 17 
diam. Illuminated obliquely. 
No. 9. Gold alloyed with 02 0 / o of 
Rhodium. X 1000 diam. Illumi¬ 
nated perpendicularly. 
No. 10. Pure Gold. X 1000 diam. 
Illuminated perpendicularly. 
